Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantas vezes eles jogaram contra o Pittsburgh Penguins?
 ###Tabelas: CREATE TABLE women_outdoor (women_outdoor_id AUTO_INCREMENT PRIMARY KEY, Pos. INT, Mark VARCHAR, Athlete VARCHAR, Nationality VARCHAR, Venue VARCHAR, Date VARCHAR) CREATE TABLE honoured_clubs (honoured_clubs_id AUTO_INCREMENT PRIMARY KEY, Club VARCHAR, Swedish championship titles INT, Allsvenskan titles INT, Introduced INT, Stars symbolizes VARCHAR) CREATE TABLE singles:_10_7_titles_3_runner-ups (singles:_10_7_titles_3_runner-ups_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Year INT, Championship VARCHAR, Surface VARCHAR, Opponent in the final VARCHAR, Score in the final VARCHAR) CREATE TABLE regular_season (regular_season_id AUTO_INCREMENT PRIMARY KEY, Game INT, March INT, Opponent VARCHAR, Score VARCHAR, Location/Attendance VARCHAR, Record VARCHAR, Points INT, Decision VARCHAR) CREATE TABLE possible_detached_objects (possible_detached_objects_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Diameter (km) VARCHAR, Perihelion (AU) INT, Aphelion (AU) INT, Year discovered INT, Discoverer(s) VARCHAR, Type VARCHAR)  
SELECT COUNT March FROM regular_season WHERE Opponent = Pittsburgh Penguins